Combined target and interlock operating switch-stand.



F. C. ANDERSON.

COMBINED TARGET AND INTERLOCK OPERATING SWITCH STAND.

APPLICATION FILED OCT. 15. m3.

1;,1%L9Q5, Patented June 1, 1915.

2 SHEETS-SHEET I.

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flttorwey THE NORRIS PETERS 50.. PHOTG-LITHQ. WASHINGTOIL D. c.

F. C. ANDERSON.

COMBINED TARGET AND INTERLOCK OPERATING SWITCH STAND.

APPLICATION FILED OCT. 15. 1913.

1 M1 905. Patented June 1, 1915.

Iii i Ili g 'zlllzi-l 51 THE NORRIS PETERS 60.. FHOTO-LITHO., WASHINCIUN. D. c.

FRANK C. ANDERSON, OF CINCINNATI, OHIO, ASSIGNOR TO THE AMERICAN VALVE & METER. COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

COMBINED TARGET AND INTER-LOCK OPERATING SWITCH-STAND.

Specification of Letters Patent.

Patented June 1, 1915.

Application filed October 15, 1913. Serial No. 795,223.

T all whom it may concern:

Be it known that I, FRANK C. ANDERSON, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Combined Target and Interlock Operating Switch- Stands, of which the following is a specification.

My invention relates to switch stands and its object is to simultaneously operate the target mechanism and the interlocking mechanism completely, preliminary to the throwing of the switch.

My invention consists in the parts and in the details of construction and arrangement of parts as will hereinafter be more fully described and claimed.

In the drawings: Figure 1 is a general perspective view of a switch stand and its target and its interlocking mechanism, provided with my invention; Fig. 2 is a detail side elevation of part of the switch stand showing the relation of the combination opera tive mechanism to the switch throwing lever Fig. 3 is a plan view of the switch stand, the target being omitted and the target shaft being shown in cross section; Fig. 41 is a partial front elevation of the switch stand in the region of the target-operating mechanism; Fig. 5 is a longitudinal vertical section of the interlocking mechanism as provided in accordance with my invention; and Fig. (3 is a detail perspective view of the bcll-crank that forms part of the interlocking mechanism.

The switch stand 1 has the main shaft 2 journaled vertically in it, being held in upper and lowerbearings by caps 3 and 4, respectively. Below the lower bearing, this shaft has the crank 5 with the crank pin 6, which is adapted to receive the connecting rod which is connected to the point rails of the switch. Above the upper bearing, this main shaft 2 has fixed on it the fulcrumhead 7, said main shaft being supported by this fulcrum-head 7 bearing down against the upper side of the upper bearing. The fulcrum-head 7 has the switch-operating lever or handle 8 pivotally swinging on the pivot 9. The top of this switch stand 1 comprises the horizontal plate 10, which has slots 11 and 12 diametrically opposite on a line through the center of the main shaft 2, and the handle or lever 8 is adapted to engage in either one of the slots when the switch is completely thrown one way or the other. The handle or lever 8 has the ear 13 above its pivot 9, with an opening 1% adapted to receive the bow or shackle of the padlock to engage against the outer face of the fulcrum-head 7 whereby the lever 8 may be locked against removal from the slot 11 or slot 12 as the case may be. It will be seen that the main shaft 2 is thus rotated 180 to throw the switch, and the mechanism so far described is similar to previously disclosed apparatus in switch stands.

The target shaft 15 is journaled vertically, parallel with the main shaft 2 in upper and lower brackets 16 and 17, respectively, which are bolted to the switch stand 1 along with the caps 3 and 4, respectively, of the upper and lower bearings of the shaft 2. These brackets not only extend outwardly some distance from the main shaft, but are also offset somewhat, as is best seen in Figs. 1 and 3. Above the upper bracket 16, a slotted arm 18 is pinned or otherwise suitably fixed to the target shaft 15, and, by bearing against the upper side of the bracket 16, supports the target shaft. The upper end of the target shaft carries the blades 19 and 20 extending at right angles to each other and adapted, respectively, when turned in directions crosswise of the track, to signal safety or danger. It will thus be seen that the target shaft'15 is to be rotated through only 90.

The combination target and interlock operating lever 21 has a pivot 22 in one of two stops 23 and 241 which are provided on the plate 10 for the fulcrum-head 7. This pivot 22 is concentric with the pivot 9 of the switch-operating lever or handle 8. Projecting from the side of the lever 21, toward the switch-operating lever 8, is a boss 25 that carries a lug 26, and the switch-operating lever 8 has a slot 27 that receives the lug 26, whereby the target-operating lever 21 is moved along with the switch-operating lever 8, the two levers swinging together on their concentric pivots 9 and 22.

A bifurcated connection-head 28 flanks the slotted arm 18 above and below, and a pin 29 passes down through this head 28 and slides in the slot 30 of the arm 18. This head 28 has, projecting over toward the target-operating lever 21, a lug 31 and a bifurcated socket 32 flanks this lug 31, with I the fulcrum-head, now make u a pin 33 passing horizontally through them, thus pivoting them together so that the socket 32 can swing on the head 28 in a vertical plane. A rod 341s screwed into the socket 32 and has a lock-nut 35 to hold it' stationary therein;'this rod 35 has an eye 36 which is received between bifurcations 37 on the upper end of the combinationlever 21, and a pin 38 passes through the bifurcations 37 and through the eye 36, thus pivoting the rod 34: and the lever 21 together. This rod 3 1 and the socket 32 make up a connecting rod between the targetoperating lever 21 and the head 28, which, engaging with the slotted arm 18, rotates the target shaft through its quarter-revolution when the lever 21 is swung upward through a quarter-revolution. By having the rod 34 screwed into the socket32, it is possible to adjust the length of the connecting rod thus made up, and, by means of the nut 35, this connecting rod may be made rigid at any adjustment. Such adjustment not only allows the parts to be accurately positioned during assemblage of the mechanism, but also allows adjustment to compensate for wear in the parts after the mechanism has been in use for some time. target to throw it out of perpendicular to the adjacent track for full presentation to approach on a curve at signaling distance from the target. I

To form'a guide for the head 28 during its initial movement, a lug 39 is provided on the bracket 16, slightly outside the head 28. Such a guide is desirable especially in view of the tendency of this connection to be. displaced outwardly during initial movement,

as the pin 29 bears against the side of the slot 30 in the arm 18, which in this position is inclined to the line of movement at an angle of 45. After the parts have moved so far that the arm 18 is approaching a position at right angles to the line of movement, this tendency becomes negligible, and toward the other end of the movement the tendency is for r the connection to be displaced in the other direction. This tendency is counteracted by another guide which will be referred to later.

WVhen the switch is to be thrown, the first act of the operator, after removing the padlock from the car 13, is to bring the handle or lever 8 to a horizontal position, swinging on its pivot 9, and with its upper end, carrying the ear 13, moving down into the interior of the fulcrum-head 7 When this lever has reached this horizontal position it is completely out of the slot 11 or 12 as the case may be. This lever 8, together with the operating lever of the switch stan and they are swung around over the plate 10 through the required 180, whereupon the handle or It also permits adjustment of the.

lever 8 is dropped into the slot 12 or 11 at the other side as the case may be.

As shown in the drawings, the switch stand is so designed that when the lever 8 is in the slot 11 it will have closed the switch and the safe or clear signal will be required of the target. Now, as the lever 8 is raised out of the slot 11, it will raise the target-operating lever 21 with it, as before described, which will result in turning the target shaft through the quarter-revolution required to effect the change of signal from safe or clear to danger. This completion of the change of signal will occur just as the lever 8 reaches its horizontal position out of engagement with the sides of the slot 11. Then the switch may be thrown, the lever 8 being brought around to the other side of the stand and dropped into the slot 12 thereat.

"While the mechanism so far described insures that the target will be operated from safe to danger position before throwing of the switch is commenced, it will not, in itself, prevent throwing of the target back to safe position before the switch itself is thrown back to such position; it will be seen that it would be possible to operate the target by means of the target-operating lever 21 itself after the switch-operating lever 8 had been disengaged therefrom. To prevent this operation of the target mechanism independently of the switch-operating mechanism, I provide a segment 1O on the fulcrum-head 7, concentric with the shaft 2. This segment is so positioned that when the fulcrum-head is in position to permit the lever 8 to occupy the slot 11, the segment will have a terminal part i1 lying alongside the line of movement of the connection head 28. This part occupies such a position along this line of movement that it will provide the guide for the head 28 on its other side, in the region where the tendency is to displace the connection of which the head 28 forms part, as hereinbefore alluded to. The segment 40 extends around from this terminal part tl to the other side of the fulcrumhead 7, where it merges with the side of the fulcrum-head.

To properly engage with the edge of the segment 40, the upper bifurcation of the head 28 is made considerably higher than the lower one, as is best seen in Figs. 1 and 5. The socket 32, connected to the head 28, is thus enabled to pass under the segment 40 on account of the segment being placed in elevated position and the head 28 being extended up to engage with the segment.

The terminal part l1 of the segment 40, being so close to the line of movement of the head 28, it will be seen that as soon as any appreciable rotation of the main or switch-operating shaft 2 occurs, this segment 40 will begin to obstruct the path which the head 28 would be compelled to follow in a return movement to return the target to position. With the segment 40 disposed as described, it will thus obstruct the return movement of the target-operating connection while the switch-operating mechanism is in any position around its 180 of travel, clear up to the extreme other position with the lever 8 in the slot 12. It will not be possible to return the target-operating mechanism to safe position until the switch-operating mechanism has been brought entirely back, so that the switch is safely closed.

It will be understood that when the switch-operating lever 8 returns, in its horizontal position, the target-operating lever 21 will be found also in horizontal position and the slot 27 in the lever 8 will receive the lug 26 of the lever 21; and then when the switch-operating lever 8 is brought down to vertical position, the target-operating mechanism will be operated back, bringing the target back into safe position as the switch-operating lever 8 is brought down into position for locking again. It will not be possible to lock this lever 8 until the opening 14 in the ear 13 has been brought far enough out of the fulcrum-head 7 to admit the shackle of the padlock. Not until this has occurred will the target have been brought completely into clear or safe position. It is thus seen that the operator is compelled to bring the target into safe position before he can lock the switch, so

that display of danger by the signal when the switch is safe is also prevented, as well as the more serious irregularity of displaying safety when the switch is open, as prevented in the manner above described.

The switch stand 1 is mounted on the head blocks 42 and one of these, close tothe switch stand, between the switch stand and the track, is gained or recessed and receives a housing 43. The point rail 44 of the switch has a guard 45 bolted to it as seen in Fig. 1, and the interlocking bar 46 is secured to this guard 45 by means of nuts 47 clamping the guard and adjustable along a rounded part 48 of the bar 46. This bar 46 slides through a part or" the housing 43 that extends outside the head block 42. A guide 49 for interlocking bar 46 is also provided on the head block 42 about midway between the housing 43 and the track. The housing 43 is bolted to the under side of a plate 50 which lies flat on the upper side of the head block 42, completely covering the recess or gain in the head block and being screwed or otherwise suitably secured to the head block as shown in Fig. 1. Sliding horizontally in the housing 43, at right angles to the interlocking bar 46, is the interlocking plunger 51. The interlocking bar 46 has an opening 52, and this interlocking plunger 51 can extend through this opening and out through the outside of the housing 43 when the point rail 44 is drawn up close to the stock rail 53 of the track and is perfectly safe for tratlio. The parts are so made however, that if the point rail 44 is, for any reason, left any appreciable distance away from the stock rail the plunger 51 can not enter the opening 52.

Secured to the upper side of the plate 50 is a crank casing 54 with a cover 55 secured to its top, and holding in bearings formed in said casing and cover the transverse shaft 56 which makes up with the arm 57 and the arms 58, a bell-crank of integral construction. The plunger 51, as shown in Fig. 5, has a head 59 fixed to it inside the housing 43 and the arm 57 of the bell-crank extends down and engages in this head 59 in such a manner that, if the arms 58 of the bellcrank are raised, this arm 57 will pull the plunger 51 back from the interlocking bar 46.

On the combination target and interlockoperating lever 21, about in alinement with the boss 25 and the lug 26, is a stud or pivot 60, by means of which the connecting rod 61 is connected to said lever 21. This connecting rod 61 extends down and has a rounded part 62 that is screwed into a. T-head 63 and provided with a lock nut 64 to fix it therein. This T-head 63 is brought between the arms 58 of the bell-crank and a pivot pin 65 passes through the arms and through the horizontal part of the T-head. One of the arms 58 is provided with a projection 66 with which the square head of the pin 65 engages, so that the pin is prevented from turning in the arms and all of the wear takes place between the pin and the T-head 63. By providing the rod 61 with the re duced threaded part 62 screwed into the T-head 63, the length of this connection may be adjusted so that the swinging of the combination lever 21 to horizontal position will withdraw the plunger 51 just the proper distance to clear the interlocking bar 46 and thereby insure that these parts will remain in their raised position when the lever 8 is drawn away from the lever 21, ready to reengage upon the return of the lever 8. It will be seen that this adjustable connection between the combination lever 21 and the interlocking mechanism is similar to the adjustable connection between said combination lever 21 and the target mechanism hereinbefore described.

From the above description it will be seen that, simultaneously with the operation of the target mechanism preliminary to throwing the switch, the combination lever 21 operates, through the connection by means of the rod 61 and the T-head 63, to raise the arms 58 of the bell-crank, which, as before described, withdraws the plunger 51 from the interlocking-bar 16. Not until this plunger is thus withdrawn may the switch be opened; but, when it is thus withdrawn, the switch is opened by swinging the lever 8 in its fulcrum-head 7 around in the horizontal plane as above described. When the switch is to be closed, the lever 8 and the fulcrum-head 7 are swung back in the horizontal plane, and, as they approach the closed position, the recess or slot 27 in the lever 8 will again receive the lug 26 of the combination lever 21. Now, if the operator is to move said lever 8 down to its vertical position within the slot 11, it is necessary to force the combination lever 21 down, and, for this lever to go down, it is necessary for the plunger 51 to enter the opening 52 in the interlocking bar 4:6. As above described, the parts are so arranged that this opening 52 will not be in position to admit the plunger 51 as long as the point rail 41% is any appreciable distance away from the stock rail 53 of the track. Therefore it will be seen that it will be impossible for the operator to bring the switch-operating lever 8 down to vertical position with its ear 13 protruding to receive the padlock unless the point rail 4A has actually been brought up to safe position and the plunger 51 has entered the opening 52 in the interlocking bar a6. Since the combination lever cannot be brought down until the plunger has'thus entered the recess in the interlocking bar &6, it will likewise be impossible to turn the target to safe position until the point rail has actually been brought up to safe position.

From the above it will be seen that it is impossible for a careless operator to lock the switch in unsafe position, whether this be due to wear and looseness in the connection between the switch stand and the rails, or whether it be due to some obstruction between the point rail and the stock rail which, even though it were slight, might hold the pointrail 4&1 far enough away for a sharp flange to enter between the point rail and the stock rail and result in derailment. Where the obstruction is small it is especially dangerous, because, without an interlocking mechanism, the operator may strain the parts of the switch stand and switch sufficiently to accomplish the return of the target to safe position and the locking of the switch stand with the obstruction in place. The interlocking mechanism prevents this; and my improved connections enable this mechanism and the target mechanism to be so operated simultaneously that a false display of the target on locking of the switch in unsafe position may be prevented while at the same time the mechanism has a minimum of parts and is subject to a minimum of wear and of attention on the part of the operator.

yet cover and hold down the housing 43 and the plunger 51 therein. I

As shown in the drawings, the bracket 16 is made with the guides 39 both above and below, so as topermit the bracket being inverted where it is desired to have a righthand instead of the left-hand switch stand. The lower bracket 17 is also invertible in making a switch stand for such reverse position, and the target-operating lever 21 would be pivoted on the stop 24: at the other side of the stand and the other parts would be arranged accordingly. The only part requiring a difierent part to be substituted for it will be the fulcrum-head 7 with its segment L0. The fulcrum-head to operate on the other side requires its segment-to be placed diametrically opposite.

The above details are referred to in order to makeclear the illustration of my preferred construction. However, it will be understood that such details may be altered and various other minor changes may be made without departing from the scope or spirit ofmy invention as set forth in the following claims: 7

1; In combination with a switch stand and a target thereon and interlocking mechanism for said switch stand, a combination target-operating and interlock-operating lever mounted on said switch stand, operative connection between said lever and said target, operative connection between said lever and said interlocking mechanism, a switchoperating element requiring initial movement in one plane before being movable in anotherv plane to operate the switch, and disengageable operative connection between this element and said lever, whereby said lever is moved during said initial movement of said element.

2. In combination with a switch stand and a target thereon and interlockingmechanism for said switch stand, a combination targetoperating and interlock-operating lever mounted on said switch stand, operative connection between said lever and said target, operative connection between said lever and said interlocking mechanism, a switchoperating element requiring initial move ment in one plane before being movable in another plane to operate the switch, disengageable operative connection between this element and said lever, whereby said lever is moved during said initial movement of said element, and means preventing movement of said lever when the element and lever are disengaged from each other.

3. In combination with a switch stand and a target thereon and interlocking mechanism for said switch stand, a combination target-operating and interlock-operating lever mounted on said switch stand, operative connection between said lever and said tar get, operative connection between said lever and said interlocking mechanism, a switchoperating element requiring initial movement in one plane before being movable in another plane to operate the switch, disengageable operative connection between this element and said lever, whereby said lever is moved during said initial movement of said element, and means carried along with said element in its switch-operating movement, and preventing movement of said lever when said element and lever are disengaged from each other.

4:. In combination with a switch stand and a target thereon and interlocking mechanism for said switch stand, a switch-operating element requiring initial movement in one plane before being movable in another plane to operate the switch, a lever engageable with said element during said initial movement, operative connection between this lever and the target, operative connection between this lever and the interlocking mechanism,whereby the target and the interlocking mechanism are completely operated during said initial movement of said element, and means carried along with said element in its switch-operating movement, and thereby projected into the path of travel of said target operative connection, whereby operation of said target and interlocking mechanism independently of the operation of said element is prevented.

5. In combination with a switch stand and a target thereon and interlocking mechanism for said switch stand, a switch-operating element requiring initial movement in one plane before being movable in another plane to operate the switch, a lever engageable with said element during said initial movement, operative connection between this lever and the target, operative connection between this lever and the interlocking mechanism, whereby the target and the interlocking mechanism are completely operated during said initial movement of said element, means carried along with said element in its switch-operating movement, and thereby projected into the path of travel of said target operative connection, whereby operation of said target and interlocking mechanism independently of the operation of said element is prevented, and stationary guiding means on said switch stand for the target operative connection, said means carried along with said element forming another guiding means for the operative connection during said initial movement of said element.

6. In combination with a switch stand and a target thereon and interlocking mechanism for said switch stand, a switch-operating element requiring initial movement in one plane before being movable in another plane to operate the switch, a lever engageable with said element during said initial movement, operative connection between this lever and the target, operative connection between this lever and the interlocking mechanism,whereby the target and the interlocking mechanism are completely operated during said initial movement of said element, and means whereby said element may be locked in its initial position, this means being so positioned that said element must return the target and the interlocking mechanism to their initial positions before the locking of said element may occur.

7. In combination with a switch stand and a target thereon, and interlocking mechanism for said switch stand, a main switch operating shaft, a fulcrum-head fixed to rotate said main shaft, a switch-operating lever pivoted in the fulcrum-head, a stationary plate having a slot, said switch-operating lever being-received in the slot and requiring to be initially swung on its pivot in the fulcrum-head to disengage from the slot and permit rotation of the fulcrum-head and main shaft, a target shaft parallel to said main shaft, a combination target-operating and interlock-operating lever pivoted concentric with the pivoting of the switchoperating lever, means for operative engagement between the switch-operating lever and this combination lever, whereby the two levers swing together during the initial movement of said switch-operating lever, operative connection between this combination lever and said target shaft, and operative connection between this combination lever and said interlocking mechanism whereby said target and said interlocking mechanism are completely operated during said initial swinging of the switch-operating lever.

8. In combination with a switch stand and a target thereon, and interlocking mechanism for said switch stand, a main switchoperating shaft, a fulcrum-head fixed to rotate said main shaft, a switch-operating lever pivoted in the fulcrum-head, a stationary plate having a slot, said switchoperating lever being received in the slot and requiring to be initially swung on its pivot in the fulcrum-head to disengage from the slot and permit rotation of the fulcrum head and main shaft, a target shaft parallel to said main shaft, a combination targetoperating and interlock-operating lever pivoted concentric with the pivoting of the switch-operating lever, means for operative engagement between the switch-operating lever and this combination lever, whereby lit] initial movement of said switch-operating .lever, an arm fixed onthe target shaft, a

connection-head articulating with the arm, a connecting element pivoted to sa1d connection-head and said combination lever, a bellcrank comprised in said interlocking mechanism, and a connecting element pivoted to said bell-crank and to said target-operating lever, whereby said target and said interlocking mechanism are completely operated during said initial swinging of said switchoperating lever.

9. In combination with a switch stand and a target thereon, and interlockingmechanism for said switch stand, a main switch operating shaft, a fulcrum-head fixed to rotate said main shaft, a switch-operating lever pivoted in the fulcrum-head, a 'stationaryj plate having a slot, said switchoperating lever being received in the slot and requiring to be initially" swung on its pivot in the fulcrum-head to disengage from the slotand permit rotation of the fulcrumheadand main shaft, a target shaft parallel to said main'shaft, a combination targetoperating and interlock-operating lever pivotedconcentric with the pivoting of the switch-operating lever, meansfor operative engagementbetween the switch-operating lever and this combination lever, whereby the twolevers swing together during the initial movement of said switch-operating lever, an arm fixed on the target shaft, a connection-head articulating with the arm, a connectingelement pivoted to said connec tion-head and said combination lever, a bellcrankcomprised in said interlocking mechanism, a connecting element pivoted to said bell-crank and to said target-operating lever, whereby said target and said interlocking mechanism are completely operated during said initial swinging of said switch-operatmeans for adjusting the length of said connecting element between said connection-head and said combination lever, and means for adjusting-the length of said connecting element between said bell-crank and said combination lever. 7

10. In combination with a switch stand and a target thereon, and interlocking mechanism for said' switch stand, a main switchoperating shaft, a fulcrum-head fixed-to rotate said main shaft, a switch-operating lever pivoted in the fulcrum-head, a stationary plate having a slot, said switchoperating lever being received in the slot and requiring to be initially swung on its pivot in the fulcrum-head to disengage from the slot and permit rotation of the fulcrumhead and main shaft, a target shaft parallel to said main shaft, a combination targetoperating and interlock-operating lever pivoted concentric with the pivoting of the switch-operating lever, means for operative engagement between the switch-operating lever and this combination lever, whereby the two levers swing together during the initial movement of said switch-operating lever, an arm fixed on the target shaft, a connection-head articulating with the arm, a connecting element pivoted to said connection-head and said combination lever, a bellcrank comprised'in said interlocking mechanism, a connecting element pivoted to said bell-crank and to said target-operating lever, whereby said target and said interlocking mechanism are completely operated during said initial swinging of said switch-operating lever, and means on said fulcrum-head adapted to project into the path of travel of said connection-head, whereby operation of the target and the interlocking mechanism independently of the operation of the switchoperating mechanism is prevented.

11. In combination with a switch stand and a target thereon, and interlocking mech anism for said switch stand, a main switchoperating shaft, a fulcrum-head fixed to retate said main shaft, a switch-operating lever pivoted in the fulcrum-head, a stationary plate having a slot, said switch-operat ing lever being received in the slot and requiring to be initially swung on its pivot in the fulcrum-head to disengage'from the 'slot and permit rotation of the fulcrumengagement between the switch-operating lever and this combination lever, whereby the two levers swing together during the initial, movement of said switch-operating lever, an arm fixed on the target shaft, 0perative connection between said combination lever and said arm whereby the target is completely operated during the initial swinging of said switch-operating lever, said interlocking mechanism comprising an interlocking bar connected to the point rail of the switch, a plunger adapted to engage across said bar, throwing means for said plunger, and operative connection between said combination lever and said throwing means for the plunger whereby the plunger is completely thrown during said initial swinging of the switch-operating lever.

12. In combination with a switch stand and a target thereon and interlocking mechanism for said switch stand, a switch-operating element requiring initial movement operating and interlock-operating lever, a-

pivot for said element on which it swings during its initial movement, a pivot for said lever substantially concentric with the pivot of the element, when the element is in initial position operative connection to the target, a pivot for the operative connection on said lever at one side of the pivot of the lever, operative connection to the interlocking mechanism, a pivot for this connection on said lever at the other side of the pivot of the lever, and disengageable operative connection between said lever and said element.

14. In combination with a switch stand and a target thereon and interlocking mechanism for said switch stand, a switch-operating element requiring initial movement in one plane before being movable in an other plane to operate the switch, a combination target operating and interlock operating lever, a pivot for said element on which it swings during its initial movement, a pivot for said lever substantially concentric with the pivot of the element, when the element is in initial position operative connection to the target, a pivot for the operative connection on said lever at one side of the pivot of the lever, operative connection to the interlocking mechanism, a pivot for this connection on said lever at the other side of the pivot of the lever, and a lug on said lever, said element having a recess receiving said lug, whereby the lever is moved aforesaid during the initial movement of the element.

15. In combination with a switch stand and a target thereon and interlocking mechanism for said switch stand, a switch-op-= erating element requiring initial movement in one plane before being movable in another plane to operate the switch, a combination target-operating and interlock-operating lever, a pivot for said element on which it swings during its initial movement, a pivot for said lever substantially concentric with the pivot of the element when the element is in initial position, operative connection to the target, a pivot for the op erative connection on said lever at one side of the pivot of the lever, operative connection to the interlocking mechanism, a pivot for this connection on said lever at the other side of the pivot of the lever, and a lug on said lever adjacent to the pivotof the operative connection to the interlocking mech anism, said element having a recess receiving the lug, whereby the lever is moved aforesaid during the initial movement of the element.

16. In switch stand mechanism, a target, interlock mechanism, a combination targetoperating and interlock-operating lever, having means whereby it is pivoted, having means near one end for operative connection to said target, having means near its other end for operative connection to said interlocking mechanism, operative mechanism and a lug on said lever adjacent to the means for the connection to the interlocking mechanism, said lug being engageable with and disengageable from said operative mechanism of the switch stand.

FRANK O. ANDERSON.

Witnesses:

JAMns A. RAMsEY, CLARENCE PERDEN.

Copies of this patent may be obtained for five cents each, by addressing the C'ommissioner of Patents, Washington, D. C. 

